Wind power rotating stand heat treatment hoisting device

Abstract

The utility model discloses a wind power rotating stand heat treatment lifting device which comprises a central lifting shaft, a support sliding along the axis of the lifting shaft is assembled on the lifting shaft, three lifting clamp arms are evenly distributed on the periphery with the lifting shaft as the center, and the tops of the clamp arms are connected with the sliding support through bolts to form rotating connection. The lifting shaft is rotationally connected with one end of a connecting plate through a fixing support at the bottom and a bolt, the other end of the connecting plate is rotationally connected with the middle of the lifting clamp arm through a bolt, a supporting frame is welded to the lower portion of the sliding support and used for placing a workpiece, and an automatic opening and closing mechanism is installed between the sliding support and the lifting shaft. The mechanism can control the hanging clamp arm to be automatically opened and closed. According to the device disclosed by the utility model, the self weight of a workpiece is ingeniously utilized, and automatic locking of the hoisting device in the hoisting process is realized, so that the operation efficiency is improved, the hoisting safety is enhanced, and safe hoisting and quick taking and placing of the wind power rotating stand in the heat treatment process are realized.

Description

Technical Field

[0001] This utility model belongs to the field of lifting equipment technology, specifically relating to a wind turbine truss heat treatment hoisting device. Background Technology

[0002] Currently, wind turbine manufacturers commonly use lifting chains and hooks for heat treatment and hoisting of wind turbine trusses. This method not only results in a cumbersome, time-consuming, and inefficient loading and unloading process, but also provides insufficient protection for the trusses during hoisting, easily causing surface damage or deformation. Furthermore, safety hazards exist during the heat treatment process. To protect worker safety, reduce workload, and improve work efficiency, there is an urgent need for a hoisting device specifically designed for heat treatment of wind turbine trusses. Utility Model Content

[0003] Purpose of the utility model: In order to overcome the shortcomings of the existing technology, this utility model provides a wind turbine truss heat treatment hoisting device to solve the existing problems. The device can realize the automatic hoisting and unloading of different models of wind turbine trusses, ensuring that the wind turbine trusses are not damaged during heat treatment and hoisting. In addition, it improves work efficiency, reduces the labor intensity of workers, and ensures the safety of the operation process.

[0004] Technical solution: A hoisting device for heat treatment of wind turbine turntables, comprising a central hoisting shaft, on which a sliding bracket is mounted and slides along its axis; three clamping arms are evenly distributed around the central hoisting shaft; the top of the clamping arms is connected to the sliding bracket by bolts to form a rotatable connection; the central hoisting shaft is connected to one end of a connecting plate by bolts through a fixed bracket at its bottom to form a rotatable connection; the other end of the connecting plate is connected to the middle of the clamping arms by bolts to form a rotatable connection; a support frame is welded below the sliding bracket to place the workpiece; and an automatic opening and closing mechanism is installed between the sliding bracket and the central hoisting shaft.

[0005] The automatic opening and closing mechanism includes a cylindrical sleeve, a cylindrical rotating core, a stop bar, and a slot. The cylindrical sleeve is fixed to the central hanging shaft, and bolts are installed on both sides of the cylindrical sleeve. After tightening, the excess part of the bolts is stuck in the serrated groove on the surface of the cylindrical rotating core. As the central hanging shaft moves up and down, the cylindrical rotating core begins to rotate along the groove on the surface under the pressure of the bolts on the cylindrical sleeve, which drives the stop bar below to rotate in the slot above the sliding bracket to achieve the locking and unlocking of the sliding bracket.

[0006] As an optimization, a retaining ring is provided in the middle part of the central hanging shaft to limit the downward sliding distance of the sliding bracket.

[0007] As an optimization: the main body of the automatic opening and closing mechanism is located above the central hanging shaft.

[0008] As an optimization: the fixed support frame below the sliding bracket consists of three parts evenly distributed around the central lifting shaft. The intersection of the three horizontal bars below the support frame is located at the bottom end of the central lifting shaft, and the length of the three horizontal bars below the support frame is greater than the radius of the lifting hole of the workpiece being lifted.

[0009] As an optimization: the automatic opening and closing mechanism can control the automatic opening and closing of the clamp arm.

[0010] As an optimization: the bottom of the clamp arm has an outward-extending clamp claw, which can lock into the stepped hole inside the wind turbine turntable to lift the wind turbine turntable.

[0011] As an optimization: when the sliding bracket is lifting and placing the wind turbine truss, it will move up and down along the central lifting shaft according to the opening and closing degree of the clamp arm. The automatic opening and closing mechanism locks and releases the sliding bracket according to the up and down movement of the sliding bracket to control the opening and closing of the clamp arm, thereby realizing the automatic picking and placing of the wind turbine truss.

[0012] Beneficial effects: The device of this utility model ingeniously utilizes the self-weight of the workpiece to achieve automatic locking of the hoisting device during the hoisting process, thereby improving operational efficiency and enhancing hoisting safety, and realizing safe hoisting and rapid loading and unloading of wind turbine turntables during heat treatment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the placement state of this utility model;

[0014] Figure 2 This is a side view of the placement state of this utility model;

[0015] Figure 3 This is a schematic diagram of the lifting state of this utility model;

[0016] Figure 4 This is a side view of the lifting state of this utility model;

[0017] Figure 5 This is a cross-sectional view of the automatic opening and closing mechanism of this utility model.

[0018] The following are marked in the diagram: 1. Automatic opening and closing mechanism; 2. Lifting lug; 3. Central lifting shaft; 4. Sliding bracket; 5. Clamping arm; 6. Connecting plate; 7. Fixed bracket; 8. Support frame; 9. Cylindrical sleeve; 10. Cylindrical rotating core; 11. Stop bar; 12. Slot. Detailed Implementation

[0019] The working process of the present invention will now be described in detail with reference to the accompanying drawings.

[0020] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, this utility model provides a wind turbine truss heat treatment hoisting device, including a central hoisting shaft 3, a bracket 4 that slides along its axis mounted on the hoisting shaft, three hoisting arms 5 evenly distributed around the hoisting shaft 3, the top of the clamping arms 5 being connected to the sliding bracket 4 by bolts to form a rotatable connection, the hoisting shaft 3 being connected to one end of a connecting plate 6 by bolts through a fixed bracket 7 at the bottom, and the other end of the connecting plate 6 being connected to the middle of the hoisting arms 5 by bolts to form a rotatable connection, a support frame 8 welded below the sliding bracket 4 for placing the workpiece, and an automatic opening and closing mechanism 1 installed between the sliding bracket 4 and the hoisting shaft 3. The automatic opening and closing mechanism includes a cylindrical sleeve 9 fixed to a central hanging shaft. Bolts are installed on both sides of the sleeve. After tightening, the excess part of the bolts is stuck in the serrated groove on the surface of the cylindrical rotating core 10. As the central hanging shaft moves up and down, the cylindrical rotating core 10 starts to rotate along the groove on the surface under the pressure of the bolts on the cylindrical sleeve 9. This drives the lower stop bar 11 to rotate in the slot 12 above the sliding bracket 4 to achieve the locking and unlocking of the sliding bracket 4.

[0021] The working process of this utility model is as follows:

[0022] When not hoisting the wind turbine truss, the lifting lug 2 is attached to the overhead crane hook via a chain. At this time, the automatic opening and closing mechanism 1 jams the sliding support 4, preventing the sliding support 4 from sliding downwards. The clamp arm 5 cannot open, and the lower clamp cannot hold the wind turbine truss. The hoisting device is then in a state of... Figure 1 The state.

[0023] When preparing to hoist the wind turbine truss, the hoisting device is positioned directly above the hoisting hole of the truss. As the overhead crane hook descends, the support frame 8 below the sliding bracket 4 will fall above the hoisting hole. Under the action of the support frame 8, the hoisting device will no longer move as the overhead crane hook descends. At this point, the overhead crane hook is raised. As the overhead crane hook rises, the automatic opening and closing mechanism 1 of the hoisting device will release the sliding bracket 4, allowing the central lifting shaft 3 to slide upwards along the central hole of the sliding bracket 4. The clamping arms 5, under the action of the connecting plates 6 on both sides, gradually open as the fixed bracket 7 moves upwards, until the jaws below the clamping arms 5 hook onto the inner side of the hoisting hole of the wind turbine truss. As the overhead crane hook continues to move upwards, the hoisting device uses the weight of the wind turbine truss to lock itself in place and remains locked throughout the entire hoisting process. The wind turbine truss is then successfully hoisted by the hoisting device. At this point, the hoisting device is in... Figure 3 The state.

[0024] When the wind turbine truss completes heat treatment and is hoisted to the designated area for unhooking, as the overhead crane hook descends, the support frame 8 below the sliding bracket 4 will fall above the hoisting hole of the wind turbine truss. Under the action of the support frame 8, the sliding bracket 4 will no longer move as the overhead crane hook descends. At this time, as the overhead crane hook continues to descend, the central lifting shaft 3 slides downwards along the central hole of the sliding bracket 4. The clamping arm 5, under the action of the connecting plates 6 on both sides, gradually closes as the fixed bracket 7 moves downwards. The jaws below the clamping arm 5 leave the inner side of the hoisting hole of the wind turbine truss until the clamping arm 5 is completely closed. At this point, the automatic opening and closing mechanism 1 of the hoisting device will lock the sliding bracket 4. As the overhead crane hook rises, the hoisting device leaves the wind turbine truss and is placed. The hoisting device then returns to its original position. Figure 1 The state.

[0025] The foregoing description clearly and completely illustrates the technical solutions in the embodiments of this utility model, enabling those skilled in the art to better understand the advantages and features of this utility model, thereby providing a clearer definition of the scope of protection of this utility model. The embodiments described in this utility model are merely some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

Claims

1. A hoisting device for heat treatment of wind turbine turntables, characterized in that: Includes a central lifting shaft (3), on which a sliding bracket (4) is mounted and slides along its axis. Three clamp arms (5) are evenly distributed around the central lifting shaft (3). The top of the clamp arms (5) is connected to the sliding bracket (4) by bolts to form a rotatable connection. The central lifting shaft (3) is connected to one end of a connecting plate (6) by bolts through a fixed bracket (7) at the bottom to form a rotatable connection. The other end of the connecting plate (6) is connected to the middle of the clamp arms (5) by bolts to form a rotatable connection. A support frame (8) is welded below the sliding bracket (4) to place the workpiece. An automatic opening and closing mechanism (1) is installed between the sliding bracket (4) and the central lifting shaft (3). The automatic opening and closing mechanism (1) includes a cylindrical sleeve (9), a cylindrical rotating core (10), a stop bar (11), and a slot (12). The cylindrical sleeve (9) is fixed to the central hanging shaft (3). Bolts are installed on both sides of the cylindrical sleeve (9). After tightening, the excess part of the bolts is stuck in the serrated groove on the surface of the cylindrical rotating core (10). As the central hanging shaft (3) moves up and down, the cylindrical rotating core (10) starts to rotate along the groove on the surface under the pressure of the bolts on the cylindrical sleeve (9), which drives the stop bar (11) below to rotate in the slot (12) above the sliding bracket (4) to achieve the locking and unlocking of the sliding bracket (4).

2. The wind turbine turntable heat treatment hoisting device according to claim 1, characterized in that: A retaining ring is provided in the middle part of the central hanging shaft (3) to limit the downward sliding distance of the sliding bracket (4).

3. The wind turbine turntable heat treatment hoisting device according to claim 1, characterized in that: The main body of the automatic opening and closing mechanism (1) is located on the upper part of the central hanging shaft (3).

4. The wind turbine turntable heat treatment hoisting device according to claim 1, characterized in that: The support frame (8) fixed below the sliding bracket (4) consists of three parts evenly distributed around the central lifting shaft (3). The intersection of the three horizontal bars below the support frame (8) is located at the bottom end of the central lifting shaft (3), and the length of the three horizontal bars below the support frame (8) is greater than the radius of the lifting hole of the suspended workpiece.

5. The wind turbine turntable heat treatment hoisting device according to claim 1, characterized in that: The automatic opening and closing mechanism (1) can control the automatic opening and closing of the clamp arm.

6. The wind turbine turntable heat treatment hoisting device according to claim 1, characterized in that: The bottom of the clamp arm (5) has outward-extending clamp claws, which can lock into the stepped holes inside the wind turbine truss to lift the wind turbine truss.

7. The wind turbine turntable heat treatment hoisting device according to claim 1, characterized in that: When the sliding bracket (4) is lifted and placed, it will move up and down along the central lifting shaft according to the opening and closing degree of the clamp arm (5). The automatic opening and closing mechanism (1) locks and releases the sliding bracket according to the up and down movement of the sliding bracket (4) to control the opening and closing of the clamp arm (5), thereby realizing the automatic picking and placing of the wind turbine turret.

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